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Agro Climatic Zones

S.No Agro Climatic Zones Districts Covered Soil Type
1 North Eastern Zone Kancheepuram, Tiruvallur, Cuddalore, Vellore, Villupuram and Tirunvannamalai 1. Red Sandy Loam 2. Clay Loam 3. Saline coastal Alluvium
2 North Western Zone Dharmapuri, Krishnagiri, salem and Namakkal (Part) 1. Non Calcareous Red 2. Non Calcareous Brown 3. Calcareous Black
3 Western Zone Erode, Coimbatore, Tiruppur, Theni, Karur (part), Namakkal (part), Dindigul, Perambalur and Ariyalur (part) 1. Red Loamy 2. Black
4 Cauvery Delta Zone Thanjavur, Nagapattinam, Tiruvarur, Trichy and parts of - Karur, Ariyalur, Pudukkottai and Cuddalore 1. Red Loamy 2.Alluvium
5 Southern Zone Madurai, Sivagangai, Ramanathapuram, Virudhunagar, Tirunelveli and Thoothukudi 1. Coastal Alluvium 2. Black 3. Red Sandy soil 4. Deep red soil
6 High Rainfall Zone Kanyakumari 1. Saline Coastal 2. Alluvium 3. Deep Red Loam
7 Hilly Zone The Nilgiris and Kodaikanal (Dindigul) Lateritic